The route varies in form from multi-laned arterial road, suburban road, to single carriageway rural highway. It passes through commercial, industrial, residential and agricultural land, and also through state forest and conservation areas.

Multiplexes along the route include:

TD255 for 2 km at Williams Bay

History:

2002: Realignment of South Western Highway between Denmark and Walpole,
which included replacement of two bridges and
construction of an overtaking bulge at the intersection with Parry Beach Road. 2